贵州瓮福磷矿英坪-穿岩洞矿段实物地质资料采集及意义  

Collection and Significance of Physical Geological Data of Yingping-Chuanyandong Ore Section of Wengfu Phosphate Deposit in Guizhou

作　　者：杨涛[1] 张银峰 黄波 朱和书 杨梅 YANG Tao;ZHANG Yinfeng;HUANG Bo;ZHU Heshu;YANG Mei(College of Architecture and Urban Planing,Guizhou Institute of Technology,Guiyang 550003,China;Geological Museum of Guizhou,Guiyang 550081,China;Geophysical and Geochemical Exploration Team of Guizhou Nonferrous Metals and Nuclear Industry Geological Exploration Bureau,Qiannan Buyi and Miao Autonomous Perfecture 558000,China)

机构地区：[1]贵州理工学院建筑与城乡规划学院,贵州贵阳550003 [2]贵州省地质博物馆,贵州贵阳550081 [3]贵州省有色金属和核工业地质勘查局物化探总队,贵州黔南布衣族苗族自治州558000

出　　处：《徐州工程学院学报（自然科学版）》2024年第1期64-71,共8页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：贵州省科技计划项目(黔科合[2016]支撑2809);贵州理工学院高层次人才科研启动项目(XJGC20161101)

摘　　要：基于瓮福矿区的重要矿段英坪-穿岩洞实物地质资料采集和成岩成矿背景的研究,发现该矿区具有高磷矿档案价值,对成岩成矿地质背景的研究有重要意义.瓮福矿区含磷岩系主要集中在下震旦统陡山陀组第四段(Pt 33d 4)的b矿层与下部的a矿层,其从下伏到上覆地层的明显岩性变化反映出以下成岩成矿背景:①新元古代-早古生代的Rodidia超大陆演化过程促进了生物富磷的发展,在约580 Ma的陡山沱中晚期触发了瓮安大生物爆发,比澄江生物爆发提前约50 Ma;②陡山沱期的磷矿主要分布在瓮福-开阳一带的台地边缘浅滩,这表明了陡山陀组地层中可能还存在此类矿床的找矿前景.③随着灯影期的西迁,从织金到云南昆阳的约400 km区域内可能还有大规模灯影期磷矿的找矿前景.④织金新华磷矿中的重稀土富集以及瓮福磷矿中幔源铅的存在,都指示了新元古代-早古生代沿织金-瓮福一带地层中可能还存在的大型-超大型喷流沉积及新矿种的找矿前景.Based on the study of physical geological data collection and the background of diagenesis and metallogenesis in the important mining section of Yingping-Chuanyandong in the Wengfu mining area,it was discovered that this mining area has a high archive value of phosphate deposits,which is of great significance for the study of the background of diagenesis and metallogenesis.The phosphorite system in the Wengfu mining area is mainly concentrated in the B ore layer and the lower A ore layer of the fourth segment(Pt 33d 4)of the Sinian Doishanto Group.The notable lithological changes from the lower till to the overlying strata reflect the following diagenesis and mineralization background:①The evolution of the Rodinia supercontinent during the Neoproterozoic-Early Paleozoic period promoted the development of bio-enriched phosphorus,triggering the Wengan massive biological outbreak during roughly 580 Ma in the late Doishantuo period,approximately 50 Ma earlier than the Chengjiang biological outbreak.②The phosphate deposits of the Doishantuo period are mainly located in the shallow shoals on the edge of the plateau in the Wengfu-Kaiyang area,suggesting that there is prospecting potential for such deposits in the strata of the Doishanto Group.③With the westward movement during the Dengying period,there is a likely large-scale prospecting potential for Dengying-period phosphate deposits in the approximately 400 km region from Zhijin to Kunyang,Yunnan.④The enrichment of heavy rare earth elements in the Xinhua phosphate deposits in Zhijin and the presence of mantle-derived lead in the Wengfu phosphate deposits both indicate potential for large-to ultra-large-scale turbidite deposits and new types of mineral deposits in the strata along the Zhijin-Wengfu area from the Neoproterozoic to the Early Paleozoic period.

关 键 词：瓮福磷矿 实物地质资料采集 成岩成矿背景 找矿前景 贵州 

分 类 号：TQ426[化学工程]